The factor affecting on the adsorption capacity
Pristine nanofibers have a relatively low amount of negative charges
on their surface thus adsorbing a low amount of (M+x).There are other affected factors as pH, contact time and
concentration that affecting the adsorption capacity and have been
studied in batch equilibriumThe metal ion
adsorption capacity of the nanofibers was enhanced during the incorporation or decoration with MWCNTs and SnO2 NP composite since
the carboxylate groups introduced on the nanofibers from MWCNTs
besides the additional of SnO2, helping in constituted more negative
sites for the electrostatic attraction of metal ions.